Re: Generate random number in SwiftForth & GForth

From	Bernd Paysan <bernd.paysan@gmx.de>
Newsgroups	comp.lang.forth
Subject	Re: Generate random number in SwiftForth & GForth
Date	2011-12-21 16:31 +0100
Organization	1&1 Internet AG
Message-ID	<jcsu3u$go3$1@online.de> (permalink)
References	(8 earlier) <jclvij$1j6$1@dont-email.me> <0c19c9b2-6476-4c2c-8b98-10a865757884@p20g2000vbm.googlegroups.com> <jcqd9b$ced$1@dont-email.me> <jcr36q$lm1$1@online.de> <jcsfcl$o8g$1@dont-email.me>

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Arnold Doray wrote:
>> This test has some false negatives, as I don't chain my buckets.
>> Running this 1000 times with my Wurstkessel rng resulted in a "too
>> good to be true" 500 twins result (this is with the static test seed
>> for reproduction).
> 
> Probably because Wurstkessel is not stateless like Xorshift? :)

Of course not.  A cryptographic hard random number generator must be 
hard to predict, and in order to achieve that, the hidden part of the 
internal state must be at least as long as the visible part - that's 
against a brute force attack.

-- 
Bernd Paysan
"If you want it done right, you have to do it yourself"
http://bernd-paysan.de/

Thread

Generate random number in SwiftForth & GForth Mark Wills <forthfreak@gmail.com> - 2011-12-13 13:36 -0800
  Re: Generate random number in SwiftForth & GForth "A. K." <akk@nospam.org> - 2011-12-13 22:49 +0100
    Re: Generate random number in SwiftForth & GForth Mark Wills <forthfreak@gmail.com> - 2011-12-13 14:14 -0800
      Re: Generate random number in SwiftForth & GForth Hans Bezemer <thebeez@xs4all.nl> - 2011-12-14 07:32 +0100
      Re: Generate random number in SwiftForth & GForth Arnold Doray <thinksquared@gmail.com> - 2011-12-17 05:12 +0000
        Re: Generate random number in SwiftForth & GForth Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-12-17 03:23 -0600
          Re: Generate random number in SwiftForth & GForth Arnold Doray <thinksquared@gmail.com> - 2011-12-17 15:27 +0000
    Re: Generate random number in SwiftForth & GForth rickman <gnuarm@gmail.com> - 2011-12-14 09:05 -0800
      Re: Generate random number in SwiftForth & GForth Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-12-14 11:43 -0600
      Re: Generate random number in SwiftForth & GForth Bernd Paysan <bernd.paysan@gmx.de> - 2011-12-14 23:05 +0100
        Re: Generate random number in SwiftForth & GForth Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-12-15 04:35 -0600
          Re: Generate random number in SwiftForth & GForth Bernd Paysan <bernd.paysan@gmx.de> - 2011-12-15 22:08 +0100
            Re: Generate random number in SwiftForth & GForth Arnold Doray <thinksquared@gmail.com> - 2011-12-18 12:41 +0000
              Re: Generate random number in SwiftForth & GForth Bernd Paysan <bernd.paysan@gmx.de> - 2011-12-18 14:58 +0100
                Re: Generate random number in SwiftForth & GForth Arnold Doray <thinksquared@gmail.com> - 2011-12-19 00:13 +0000
                Re: Generate random number in SwiftForth & GForth rickman <gnuarm@gmail.com> - 2011-12-19 18:20 -0800
                Re: Generate random number in SwiftForth & GForth Arnold Doray <thinksquared@gmail.com> - 2011-12-20 16:31 +0000
                Re: Generate random number in SwiftForth & GForth Bernd Paysan <bernd.paysan@gmx.de> - 2011-12-20 23:45 +0100
                Re: Generate random number in SwiftForth & GForth Arnold Doray <invalid@invalid.com> - 2011-12-21 11:19 +0000
                Re: Generate random number in SwiftForth & GForth Paul Rubin <no.email@nospam.invalid> - 2011-12-21 03:43 -0800
                Re: Generate random number in SwiftForth & GForth Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-12-21 09:10 -0600
                Re: Generate random number in SwiftForth & GForth Arnold Doray <invalid@invalid.com> - 2011-12-21 15:30 +0000
                Re: Generate random number in SwiftForth & GForth Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-12-21 10:45 -0600
                Re: Generate random number in SwiftForth & GForth Arnold Doray <invalid@invalid.com> - 2011-12-23 09:56 +0000
                Re: Generate random number in SwiftForth & GForth Andrew Haley <andrew29@littlepinkcloud.invalid> - 2011-12-23 04:23 -0600
                Re: Generate random number in SwiftForth & GForth Bernd Paysan <bernd.paysan@gmx.de> - 2011-12-21 16:31 +0100
                Re: Generate random number in SwiftForth & GForth rickman <gnuarm@gmail.com> - 2011-12-20 15:34 -0800
  Re: Generate random number in SwiftForth & GForth Roelf Toxopeus <rt4all@notthis.hetnet.nl> - 2011-12-13 23:50 +0100
    Re: Generate random number in SwiftForth & GForth "Elizabeth D. Rather" <erather@forth.com> - 2011-12-13 13:58 -1000
  Re: Generate random number in SwiftForth & GForth Brad <hwfwguy@gmail.com> - 2011-12-14 07:43 -0800

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